<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item><a href="/">用户管理</a></el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>  
        </el-breadcrumb>
        <!-- 卡片样式区域 -->
        <el-card class="box-card">
            <!-- 搜索与添加区域 -->
            <el-row :gutter="20">
              <el-col :span="8">
                    <el-input placeholder="请输入内容" 
                    v-model="queryInfo.query" 
                    clearable
                    @clear="getUserList()"
                    class="input-with-select">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList()"></el-button>
                    </el-input>
              </el-col>
              <el-col :span="4">
                  <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
              </el-col>
            </el-row>
            <!-- 用户列表区域 -->
            <el-table :data="userList" border stripe >
                <el-table-column type="index" ></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column> 
                <el-table-column label="邮箱" prop="email"></el-table-column> 
                <el-table-column label="电话" prop="mobile"></el-table-column> 
                <el-table-column label="角色" prop="role_name"></el-table-column> 
                <el-table-column label="状态" >
                    <template slot-scope="scope">
                            <!-- {{scope.row}} -->
                        <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
                        </el-switch>
                    </template>    
                </el-table-column> 
                <el-table-column label="操作" >
                   <template slot-scope="scope">
                       <!-- 修改按钮 -->
                       <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditorDialog(scope.row.id)"></el-button>
                       <!-- 分配角色按钮 -->
                           <!-- 文字提示 -->
                            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                            </el-tooltip>
                       <!-- 删除按钮 -->
                       <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                    </template> 
                </el-table-column> 
            </el-table>

            <!-- 分页区域 -->
             <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[1, 2, 5, 10]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
            </el-pagination>

        </el-card>

        <!-- 添加用户的对话框 -->
        <el-dialog
            title="添加用户"
            :visible.sync="addDialogVisible"
            width="30%"
            @closed="addDialogClosed"
            >
            <!-- 内容主体区域 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部 按钮区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 修改用户的对话框 -->
        <el-dialog
            title="修改用户"
            :visible.sync="editorDialogVisible"
            width="50%"
            @closed="editDialogClosed">
           <el-form :model="editorForm" :rules="editFormRules" ref="editFormRef" label-width="70px" >
                <el-form-item label="用户名">
                    <el-input v-model="editorForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editorForm.email"></el-input>
                </el-form-item>
                <el-form-item label="电话" prop="mobile">
                    <el-input v-model="editorForm.mobile"></el-input>
                </el-form-item>
           </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editorDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>
        
        <!-- 分配角色的对话框 -->
        <el-dialog
            title="分配角色"
            :visible.sync="setUserDialogVisible"
            width="50%"
            @close="setRoleDialogClosed">
            <div>
                <p>当前的用户：{{userInfo.username}}</p>
                <p>当前的角色：{{userInfo.role_name}}</p>
                <p>分配新角色: 
                    <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option
                        v-for="item in rolesList"
                        :key="item.id"
                        :label="item.roleName"
                        :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setUserDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span> 
        </el-dialog>

    </div>
</template>

<script>
export default {
    data(){
        // 自定义校验规则
        // 校验Email
        var checkEmail = (rule, value, callback) =>{
            // 验证邮箱的正则表达式
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

            if(regEmail.test(value)){
                // 合法
                return callback()
            }
            callback(new Error('请输入合法的邮箱地址'))
        }
        // 校验手机号
        var checkMobile = (rule, value, callback) =>{
            // 验证手机号的正则表达式
            const regMobil = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

            if(regMobil.test(value)){
                // 合法
                callback()
            }
            callback(new Error('请输入合法手机号'))
        }
        return{
            // 获取用户列表的参数对象
            queryInfo:{
                query:'',
                // 当前的页数
                pagenum:1,
                // 当前每页显示的数据条数
                pagesize:2
            },
            userList:[],
            total:0,
            // 控制添加用户对话框的显示和隐藏
            addDialogVisible: false,
            // 控制修改用户对话框的显示和隐藏
            editorDialogVisible: false,
            // 控制分配角色对话框的显示和隐藏
            setUserDialogVisible: false,
            // 点击修改按钮，当前需要被分配角色的用户的信息
            userInfo: {},
            // 该用户的所有角色的列表
            rolesList: [],
            // 已选中的角色Id值
            selectedRoleId: '',
            // 添加用户的表单数据
            addForm:{
                username: '',
                password: '',
                email: '',
                mobile: ''
            },
            // 添加用户表单的验证规则对象
            addFormRules:{
                username:[
                    {required: true, message: '请输入用户名字', trigger: 'blur'},
                    {min: 3, max: 10, message: '用户名的长度在3~10个字符之间', trigger: 'blur'}
                ],
                password:[
                    {required: true, message: '请输入密码', trigger: 'blur'},
                    {min: 6, max: 15, message: '密码的长度在6~15个字符之间', trigger: 'blur'}
                ],
                email:[
                    {required: true, message: '请输入邮箱地址', trigger: 'blur'},
                    {validator: checkEmail, trigger: 'blur'}
                ],
                mobile:[
                    {required: true, message: '请输入手机号', trigger: 'blur'},
                    {validator: checkMobile, trigger: 'blur'}
                ]
            },
            // 点击修改信息，从后台查询到的用户信息对象
            editorForm:{},
            // 修改用户信息表单的验证规则对象
            editFormRules:{
                email:[
                     {required: true, message: '请输入邮箱地址', trigger: 'blur'},
                     {validator: checkEmail, trigger: 'blur'}
                ],
                mobile:[
                    {required: true, message: '请输入手机号', trigger: 'blur'},
                    {validator: checkMobile, trigger: 'blur'}
                ]
            }
        }
    },
    created(){
        this.getUserList()
    },
    methods:{
        async getUserList(){
            const {data: res} = await this.$http.get('users',{ params: this.queryInfo })
            //console.log(res);
            if(res.meta.status !== 200) return this.$message.error('用户列表获取失败')
            else{
                this.userList = res.data.users
                this.total = res.data.total
            }
        },
        // 监听 pageSize 改变的事件
        handleSizeChange(newSize){
            // console.log(newSize);
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        // 监听 页码值改变的事件
        handleCurrentChange(newPage){
            this.queryInfo.pagenum = newPage
            this.getUserList() 
        },
        // 监听 switch 开关状态的事件
        async userStateChanged(userInfo){
            //console.log(userInfo)
            const {data: res} = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
            // console.log(res)
            if(res.meta.status !== 200) {
                userInfo.mg_state != userInfo.mg_state
                return this.$message.error('用户状态更新失败')
            }
            this.$message.success('用户状态更新成功')
        },
        // 监听添加用户对话框的关闭事件
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        // 点击确认按钮，添加新用户
        addUser(){
            this.$refs.addFormRef.validate(async valid=>{
                // console.log(valid);
                if(!valid) return
                const {data: res} = await this.$http.post('users',this.addForm)
                if(res.meta.status !== 201){
                    this.$message.error('用户添加失败！')
                }

                this.$message.success('用户添加成功！')
                // 隐藏添加用户的对话框
                this.addDialogVisible = false
                // 重置对话框
                this.getUserList()
            })
        },
        // 点击修改按钮
        async showEditorDialog(id){
            // console.log(id)
            const {data: res} = await this.$http.get('users/' + id)
            if(res.meta.status !== 200){
                return this.$message.error('获取用户信息失败！')
            }

            this.editorForm = res.data
            this.editorDialogVisible = true
        },
        // 监听修改用户信息对话框关闭事件
        editDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },
        // 修改用户信息并提交
        editUserInfo(){
            this.$refs.editFormRef.validate(async valid=>{
                // console.log(valid);
                if(!valid) return
                // 发起修改用户信息的数据请求
                const {data: res} = await this.$http.put('users/' + this.editorForm.id,{
                    email: this.editorForm.email,
                    mobile: this.editorForm.mobile
                })

                if(res.meta.status !== 200){
                    return this.$message.error('用户信息更新失败！')
                }

                // 关闭对话框
                this.editorDialogVisible = false
                // 刷新列表
                this.getUserList()
                // 提示
                this.$message.success('用户信息更新成功！')
            })
        },
        // 点击删除按钮，根据id删除该用户信息
        async removeUserById(id){
            // 弹框提示，是否确认删除
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(error =>{
                return error
            })

            // 如果用户确认删除，返回字符串为confirm
            // 如果用户取消，返回字符串为concle
            if(confirmResult !== 'confirm'){
                return this.$message.info('已取消删除操作')
            }

            const {data: res} = await this.$http.delete('users/' + id)
            if(res.meta.status !== 200){
                return this.$message.error('删除失败!')
            }

            this.$message.success('删除成功')
            this.getUserList() 
        },
        // 点击分配角色按钮，
        async setRole(userInfo){
            this.userInfo = userInfo
            // 打开对话框之前，获取所有角色的列表
            const {data: res} = await this.$http.get('roles')
            console.log(res);
            if(res.meta.status !== 200){
                return this.$message.error('角色获取失败！')
            }

            this.rolesList = res.data

            this.setUserDialogVisible = true
        },
        // 点击确认，提交分配的角色
        async saveRoleInfo(){
            if(!this.selectedRoleId){
                return this.$message.error('请选择要分配的角色')
            }

            const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid: this.selectedRoleId})
            if(res.meta.status !==200){
                return this.$message.error('更新角色失败！')
            }

            this.$message.success('更新角色成功！')
            this.getUserList()
            this.setUserDialogVisible = false
        },
        // 监听分配角色对话框关闭，重置
        setRoleDialogClosed(){
            this.selectedRoleId = ''
            this.userInfo = {}
        }
            
    }
        
}
</script>

<style lang="less" scoped>

</style>